# ESP32 ESP-IDF and ESP8266 RTOS SDK component for BH1750 ambient light sensor ## Tested on 1. ESP8266 RTOS_SDK v3.4 2. ESP32 ESP-IDF v5.2 ## Using In an existing project, run the following command to install the component: ```text cd ../your_project/components git clone https://github.com/aZholtikov/zh_bh1750.git ``` In the application, add the component: ```c #include "zh_bh1750.h" ``` ## Example Reading the sensor: ```c #include "zh_bh1750.h" #define I2C_PORT (I2C_NUM_MAX - 1) void app_main(void) { esp_log_level_set("zh_bh1750", ESP_LOG_NONE); i2c_config_t i2c_config = { .mode = I2C_MODE_MASTER, .sda_io_num = GPIO_NUM_21, // In accordance with used chip. .sda_pullup_en = GPIO_PULLUP_ENABLE, .scl_io_num = GPIO_NUM_22, // In accordance with used chip. .scl_pullup_en = GPIO_PULLUP_ENABLE, #ifndef CONFIG_IDF_TARGET_ESP8266 .master.clk_speed = 100000, #endif }; #ifdef CONFIG_IDF_TARGET_ESP8266 i2c_param_config(I2C_PORT, &i2c_config); i2c_driver_install(I2C_PORT, i2c_config.mode); #else i2c_param_config(I2C_PORT, &i2c_config); i2c_driver_install(I2C_PORT, i2c_config.mode, 0, 0, 0); #endif zh_bh1750_init_config_t zh_bh1750_init_config = ZH_BH1750_INIT_CONFIG_DEFAULT(); zh_bh1750_init_config.i2c_port = I2C_PORT; zh_bh1750_init(&zh_bh1750_init_config); zh_bh1750_adjust(69); // Just for an example of how to change the sensor sensitivity. float lux = 0.0; for (;;) { zh_bh1750_read(&lux); printf("Lux %0.2f\n", lux); vTaskDelay(1000 / portTICK_PERIOD_MS); } } ``` Any [feedback](mailto:github@azholtikov.ru) will be gladly accepted.